Sen. Elizabeth Warren will visit four cities in Iowa this weekend, her presidential exploratory committee said Tuesday, her first trip to the early caucus state since launching her 2020 exploratory committee on Monday.

The Massachusetts Democrat is scheduled to make stops in Council Bluffs, Sioux City, Storm Lake and Des Moines, according to her exploratory committee. Although Monday’s committee announcement marked Warren’s first concrete step toward a 2020 bid, the senator has been active in Iowa for weeks, speaking with candidates, elected officials, labor leaders and other Democratic stakeholders throughout the state.